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本文将铅锌尾矿、石屑和统灰按照3:3:4的质量比,混合粉磨至比表面积为450m2/kg左右,得到铅锌尾矿复合粉,其需水量比为98%,28d活性指数为71%。将此种铅锌尾矿复合粉应用于混凝土中,混凝土的工作性能和力学性能都与苏州望电Ⅱ级灰相当。
In this paper, lead-zinc tailings, stone chips and unite ash are mixed and ground to a specific surface area of 450m2 / kg according to a mass ratio of 3: 3: 4 to obtain a composite powder of lead and zinc tailings, whose water requirement ratio is 98% 28d activity index of 71%. The use of such lead-zinc tailings composite powder in concrete, concrete working performance and mechanical properties are similar to Suzhou Wangdi Class II gray.